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The potential information in the temperature difference between shadow and sunlit of surfaces and a new way of retrieving the soil moisture 总被引:3,自引:0,他引:3
ZHANG Renhua SU Hongbo Li Zhaoliang SUN Xiaomin TANG Xinzhai F.Becker 《中国科学D辑(英文版)》2001,44(2):112-123
The thermal inertia and plant water stress index are often adopted to estimate soil moisture available for crops or plants.
However, it is not very easy to obtain two temporal temperatures for thermal inertia model and air temperature for the plant
water stress mode. Shadows of ground objects are often referred to noise on visible and near infrared remote sensing. But
the difference of temperature between shadows and sunlit contains rich information concerning with heat-water status for soil.
This paper presented a new way to excavate just by temperature difference usually between shadow and sunlit surface. Experiments
validated the ideal. We can adopt thermal camera to measure the differences in the field measurements. However, we must use
inversion based on multianglar thermal infrared remote sensing data in airborne and spaceborne. An inverting model was also
presented by using Monte-Carlo and the least square method. Results show that this way is feasible. 相似文献
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长江三角洲北翼地区缺少较长尺度的第四纪海陆变迁及环境演变的深入探讨,深达423m的海安县基岩标J9孔为此提供了较好的研究对象。通过观察该孔松散层岩芯,总结其沉积特征,认为岩芯明显可划分为6个特征岩性段。同时,地层古地磁测试结果显示: 0~200m为布容正极性世,200~334m为松山负极性世,334m以下为高斯正极性世。综合分析岩芯沉积特征并参考古地磁测试结果对地层进行了初步划分,认为 0~39m为全新世地层,39~153m为晚更新世地层,153~200m为中更新世地层,200~334m为早更新世地层,之下为新近纪地层。从沉积地层特征推测,在第四纪地层中可能存在有5个海侵层,自上而下为第Ⅰ海侵层(镇江海侵)、第Ⅱ海侵层(滆湖海侵)、第Ⅲ海侵层(昆山海侵)、第Ⅳ海侵层(嘉定海侵)和第Ⅴ海侵层(如皋海侵),分别出现在孔深 5~39m段、59.2~85.1m段、121~153m段、171~200m段和 246.3~277.2m段。孔深39~41m存在的晚更新世晚期特征硬粘土标志层,指示本地不是冰后期古河谷的发育地。 相似文献